Maj. Gen. William A. Chambers and retired Lt. Gen. Frank G. Klotz participate in a panel discussion focusing on the role of the Intercontinental Ballistic Missile force in 21st century deterrence during the 2012 Air Force Association Air and Space conference, in Washington, D.C., Sept. 18, 2012. Chambers is the Strategic Deterrence and Nuclear Integration assistant chief of staff and Klotz is the Senior Fellow for Strategic Studies and Arms Control Council on Foreign Relations. ICBM force attributes were compared and discussed in light of ongoing debates concerning U.S. nuclear force structure. (U.S. Air Force photo/Senior Airman Steele C. G. Britton)